Take the head off & check the piston faces to see for yourself.
Unless it's leaking alot of oil I would't touchthe son of a bitch. Nor would I do anything power wise to what you have if you're going 3s-gte becuase none of the useful mods are going to carry over to a useful 3s-gte build.
And I'd sell your car & just start with a v6 camry/avalon/ES 300 if u want a Camry. It's alot cheaper. :P
For that matter, for the cost of a 3s-gte build & the hardware to swap it. You could buy an mr2 turbo, sell the 3s-gte out of it & build a turbo v6 to put in it.
nizice